Printing-press attachment.



G. MERZ- & I. LEBART.

PRINTING PRESS ATTACHMENT.

Patented Dec. 1, 1908.

APPLICATION IILED HAY 18, 1908.

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CHARLES MERZ, OF FORT LEE, NEW JERSEY, AND FREDERICK LEBART, OF NEW YORK, N. Y.

PRINTING-PRESS ATTACHMENT.

Specification of Letters Patent.

Patented Dec. 1, 1908.

Application filed May 18, 1908. Serial No. 433,345.

To all whom it may concern:

Be it known that we, CHARLES MERZ, a resident of Fort Lee, in the county of Bergen and State of New Jersey, and FREDERICK LEBART, a resident of the city of New York, Astoria, borough of Queens, in the county of Queens and State of New York, both citizens of the United States, have invented a new and Improved PrintingPress Attachment, of which the following is a full, clear, and exact description.

The invention relates to platen or job printing presses, and its object is to provide a new and improved attachment whereby the type is uniformly inked and double rolling is entirely prevented.

The invention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of the improvement as applied Fig. 2 is an enlarged side elevation of the same; Fig. 3 is a perspective view of one of the upper bearing blocks; and Fig. 4 is a like view of the intermediate bearing block.

The platen or job press of the usual construction is provided with the composition inking rollers A, B and 0 adapted to take up the ink from the ink supply device and to travel over the type with a view to ink the same. The inking rollers A, B and C have their shafts A, B, C journaled in bearings D, E, F formed in bearing blocks D, E, h, arranged in pairs and mounted to slide in suitable guideways arranged on the roller frame G, actuated in the usual manner, to alternately bring the inking rollers A, B and C in engagement with the ink supply device and with the ty e, as is well known in running ordinary p aten or job presses, so that further descri tion of the same is not deemed necessary. T 1e bearing blocks D, E and F are provided with rods D E, F on which are coiled springs D, E, F, resting at one end on the roller frame G and at the other end on pins D, E, F, held on the rods D E F whereby the bearing blocks D, E, F are yieldingly mounted to permit the inking rollers A, B and C to make proper contact with the ink supply device and the type to be inked.

It is well known that the inking rollers A, B and C in passing over the type are liable to unevenly ink the same, as the same spot on the peripheral face of an inking roller is liable to come twice in contact with the type, that is, once at or near the top of the chase and once at or near the bottom thereof, and as the ink on an inking roller is almost all taken up by the type at the first contact at or near the top of the chase, it is evident that the type at the second contact at or near the bottom of the chase receives but little if any ink, and hence the type is unevenly inked and bad printing is the result. In order to prevent this, the ink on the composition inking rollers A, B and C is constantly distributed or evened up, and for this purpose metallic ink-distributing rollers H and 1 are provided, having their shafts H and I journaled in bearings D E formed in the bearing blocks D and E, as plainly indicated in the drawings. The bearings D in the bearing blocks D are so arranged, and the distributing roller H is of such a diameter, and the peripheral faces of both composition rollers A and B and the bearings E in the bearing blocks E and the diameter of the distributing roller I are so arranged, that the peripheral face of the distributing roller I is simultaneously in contact with the peripheral faces of the inking rollers B and C. Now when the printing press-is running and the composition inking rollers are rotated and carried alternately in contact with the ink supply device and the type, it is evident that the distributing rollers H and I are likewise rotated by the rotation of the inking rollers A, B and C, and consequently the ink on the said inking rollers is evenly distributed to insure an even inking of the type.

By mounting the distributing rollers H and I in the same bearing blocks D and E, which carry the inking rollers A and B, it is evident that convenient access can be had to the inking rollers, that is, the same can be removed conveniently whenever desired for renewal of the composition or for other puroses, it being understood that the bearings 5, E are open, to allow convenient removal of the inking rollers and the distributing rollers.

Having thus described our invention, we claim as new and desire to secure by Letters Patent: I

1. A platen printing press, comprising an inking roller frame, bearing blocks arranged in pairs, and provided with rods, the frame being provided with openings through which the rods extend, coil springs encircling the rods, each of said blocks being provided with a slot, composition rollers having trunnions engaging the slots, sundry of said blocks being provided with other slots, and metal rollers journaled in said other slots, and in peripheral contact with the composition roller, journaled in the same pair of blocks, said slots being arranged to permit the composition roller to move away from the metal roller, and to prevent the metal roller from moving away from the composition roller.

2. A platen printing press, comprising an inking roller frame, spring pressed bearing blocks, yieldingly mounted in the frame, and

arranged in pairs, a composition roller journaled in each pair of the bearing blocks, and a metal roller journaled in sundry of the pairs of blocks, and in peripheral contact with the composition roller journaled in the same pair of blocks, the composition rollers being mounted to permit them to yield from the metal rollers, and the metal rollers being mounted to prevent them yielding from the composition rollers.

In testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses.

CHARLES MERZ. FREDERICK LEBART.

Witnesses to the signature of Charles Merz:

WILLIAM C. SCHAEFER, GEORGE N. KRAUsHAAR.

Witnesses to the signature of Frederick Lebart:

ROBERT C. THOMAS, TIMOTHY A. MAHONEY. 

